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Author Topic: B737 DIY Gauges servo gears ??  (Read 329 times)

Offline ifeliciano

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B737 DIY Gauges servo gears ??
« on: November 08, 2017, 10:13:23 AM »
What size/ratio gears are most using on your servos for your DIY gauges?

Offline mickc

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Re: B737 DIY Gauges servo gears ??
« Reply #1 on: November 08, 2017, 05:40:48 PM »
Most gauges I convert  I use 12t/24t gears, so 2:1.   Most servos only have 180 degrees of travel, but the needles need roughly 270-300 degrees depending on the gauge.  2:1 gives you enough travel and avoids using the area near the endstops.

Some need more, like the Diff pressure gauge, where the needles go almost 360 degrees, for that i used 15t/40t


Offline kurt-olsson

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Re: B737 DIY Gauges servo gears ??
« Reply #2 on: November 09, 2017, 04:39:56 AM »
Sweet! I will convert all my gauges like this.

Offline ifeliciano

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Re: B737 DIY Gauges servo gears ??
« Reply #3 on: November 09, 2017, 09:59:01 AM »
Thanks Mick!!

Offline ifeliciano

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Re: B737 DIY Gauges servo gears ??
« Reply #4 on: November 10, 2017, 10:34:57 AM »
To expand on this topic. What type servo are you all using? Digital or Analog(ue)? Does it matter?

Offline mickc

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Re: B737 DIY Gauges servo gears ??
« Reply #5 on: November 10, 2017, 07:52:07 PM »
In my experience, digital ones are more stable & accurate, but draw more power and tend to be a bit noisier.
Also digital ones tend to have more travel than analogue ones

 

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